Wet air-pump.



0. C. BUSS.

WET AIR PUMP.- APPLICATION HLED AUG. 7, 1909.

Patented Aug. 1, 1916.

2 SHEETS-SHEET 1 INVENTOR. m c.

9/6 A TTORNEY IN FACT.

0. C.BUSS. WET AIR PUMP. APPLICATION man AUG-7, 1909.

Pdtnted Aug. 1,1916.

2 SHEETSS HEET Z.

WITNESSES I N YEN TOR HIS ATTORNEY IN FACT.

TION DES PRocEDEs WESTINGHOUSE-LEBLANC, 0F PARIS, FRANCE.

'- WET AIR-PUMP. V

OTTO C. BUSS, 0F HAVRE, FRANCE, ASSIGNOR TO SOCIETE ANONYME POUR LEXPLOITA- as surface condensers.

Maurice Leblanc in a French Patent N 0. 342,599 issued on April 23,1904, describes and illustrates a form of air pump especially used in connection with condensing apparatus., I have discovered that when the same is utilized in connection with surface condensers it is necessary to have two pumps, one for the air and one for the condensed water. This inventionrelates to a single device for accomplishing the purpose of both of said pumps.

In the drawings: In Figure l I have illustrated such device; in Fig. 2 I have illustrated a modification thereof; and Fig. 3 illustrates an arrangement of apparatus in which it is essential to recover all the water of condensation. rangement of apparatus embodying my invention in connection withan end view of a surface condenser. I I

The pump illustrated in the drawings ineludes a rotatable impeller mounted on a shaft 4 and provided with an annular row of blades 5. The impeller is adapted to be driven by any suitable means, such as a motoiyor turbine, not shown. The blades 5 are adapted to receive water or other ejecting or operating liquid from a distributer (3, supplied from any suitable source, so located within the ring of blades that the liquid delivered by it is discharged from only a partial number of the blades at a time in the form of thin sheets or leaves through a collecting chamber or combining tube 7 and a diffuser 8, thus making the impeller a partial injection impeller. The leaves of liquid traversing the combining tube segregate small portions of air or other non-condensable gases and, b imparting a high velocit to them, dischargethem'through the diffuser tube against a pressure higher than that existing in the combining tube 7. The source of air or gas to be removed communicates Fig. 4 illustrates an ar-.

Specification of LettersPatent. Patentd Aug, 1; 1916, Application filed August 7, 1909. Serial No. 511,817.

with the upper end of the combining tube f7 through .a port9. f The apparatus is particularly adapted to remove the air as well as the water of cofidensation from surface condensers. In the apparatus illustrated in the drawing, I' ha-ve shown three ways of discharging-the Water of condensation from surface condensers; this maybe accomplished, however, in four ways, the first of which requires. no change? tothe" original air pump apparatus disclosed 1n the above referred'to French patent.-

The apparatus for carrying out all of the method consists of a rotatable impe1lerproa dis vided withan annular row of blades, tributer chamber located within the 'rowbf blades and supplied with Water from any suitable source of supply and provided with a distributing nozzle water to the row of blades, into which the water is projected by the blades in a finely divided state and a ditfuser in .line with the discharge end of the combining tube. tion, by mingling with the Water from the blades 5, will attain a high velocity and in this manner will be projected through the combining tube and the diffuser tube.

In Fig. 1, I have illustrated a second 6 for distributing a combining tube The water of condens'a-v I projected method of discharging the non-condensa'ble' gases and the fater of condensation froin a condenser. In carrying out this method, I

may deliver the water of 'condensati'on fiom the condenser, through one or moreori fic'e s 11 and connecting 13, which surrounds the delivery end of the combining tube 7 and which is exposed tovacuum pressure. The water of condensation is dischargedfrom piping 12 to a chamber" the chamber 13' by,

the ejector action of thewater issuing from the combining tube 7 and tra-versin'g'the' distributer 8. Vith this arrangement]the'air or other non-condensable gases are delivered to the port 9 o'flthe combining tube in the usual manner. This arrangement of apparatus ismore fully described in'my application, SerialNo. 555,718, filed, April 15,1910. In Fig. 4'1 have" illustrated appai't usfor arrying forward a third method of dissy condenser. deliver the air or non-condensable gases to the port 91nthe usual manner charging the water of condensation from a" and deliverthe Water'of condensation to an tributer 6.

auxiliary distributer 14, which is arranged to deliver the water of condensation to the rotating blades 1n the same manner that,

the ejecting the combining tube 7 if the auxiliary distributer 14 was placed above the distributer 6.

In Fig. 2 I have illustrated a fourth method of discharging the water of conden-' sation and the non-condensable gases from ing water and the water divided 'into two portions, the main paratus.

Instead of mixing the ejectof condensation, and delivering them to the combining tube 7 and the diffuser 8, I may introduce the water of condensation at another point of the turbine and exhaust it to the atmosphere by a special diffuser. I accomplish this by prothe condenser.

viding a separate distributer 15 which is removed some distance from the main dis- .tributer 6 and which delivers Water of condensation to the blades 5.' The waterdelivered to the blades by the distributer 15 is discharged through a combining tube 17 and a diffuser tube 18. The diffuser 18 is diffuser tube and a priming tube 19 around the delivery end of which priming liquid may be delivered from a port 20 and a communieating annular chamber 21 to start the apparatus into operation. In Fig. 4: I have illustrated one embodiment of my invention in connection with a surface condenser 27 The port 9 of the combining tube, communicates with the air discharge ports of the condenser through piping 28, and the auxiliary distributer 14: communicates with the condensing water discharge port of the condenser through the piping 29.

In carrying out each of the methods disclosed the apparatus should be so arranged, relative to the condenser, that the waterof this condensation will How of its own accord,

that is, by gravity to the discharging ap- The present invention can be employed to advantage in installations on ship-board, where it is desirable to retain the water of condensation 'and all of the condensable vapors, It is commonly known that any dry vacuum pump, operating in connection with a surface condenser, draws in and discharges air saturated with vapor and that this results in a loss of water. This disadvantage may be avoided by employing the water of condensation as the operating or ejecting In accomplishing liquid of the air pump.

Fig.

this, I provide a tank 22 as shown in 3, to which the water of condensation is delivered. The air pump 23'draws in its operating water from the tank the piping 24c and returns it again to the tank through the diffuser tube 25.

Any of the apparatus for discharging the water of condensation from the condenser be employed in connection with the tank 22. The water of condensation together with the operating water will of course be discharged into the tank 22 either through the diffuser 2-5-or through the dif fuser 25 and a supplemental diffuser; The feed pumps will draw water from the tank for the boilers and. consequently the water level in the tank will remain approximately constant. Thewvater in the tank may be cooled the desired amount by means of coils through which cooling liquid circulates.

The third and fourth methods described are preferred and the apparatus disclosed in connection with them is the preferred apparatus. In each of these methods the efiiciency of the pump is increased for the reason that little or no more power is required to discharge the water of condensation and the pump does the double duty of withdrawing the air from the condenser and discharging the water of condensation. The water of condensation, whether delivered through the diffuser 14 of Fig. i or the diffuser 15 of Fig. 2, assists in withdrawing air from the condenser.

In Fig. 4 a pipe 4.0 is shown which leads water from any suitable source of water supply to the interior of the water distributer to the distributing chamber within the row of blades.

In accordance with theprovisions of the patent statutes, I have described the principle of operation of my invention together with the apparatus which I consider to represent the best embodiment thereof, but I desire to haveit understood that the apparatus shown is only illustrative and that the invention can be carried out by othe'r means.

What I claim is 1. In combination with a condenser, a combining tube communicating therewith, a diffuser communicating with said tube, a bladed' impeller for liquid through said tube and said diffuser, a distributer for delivering ejecting liquid to said impeller and a distributor for delivering the water of condensation from said condenser to the blades of said impeller whereby it is discharged from said. condenser.

2. In combination with a condenser, a combining tube communicating therewith, a diffuser communicating with said combining tube, a bladed impeller V for discharging ejecting liquid @through said tube and said diffuser, a distributer for delivering ejecting liquid to said impeller, a supplemental distribut'er communicating with said condenser 22 through discharging ejecting for delivering the Water of condensation therefrom to the blades of said impeller, and a combining tube for receiving the Water of condensation discharged from the im- 5 peller.

3. In combination With a condenser, a combining tube communicating therewith, a bladed impeller for discharging ejecting liquid through said combining tube, a dis- 10 tributer for delivering ejecting liquid to the blades of said in peller, a supplemental distributer communicating with said Condenser for delivering Water of condensation therefrom to the blades of said impeller and a 'combiningtube and diffuser for receiving the Water of condensation discharged from said impeller.

In testimony whereof, I have hereunto subscribed 'my name this 7th day of Au- 

